Turbine-engine.



No. 811.639. PATEN'IED FEB. 6,1906.

P" IE1 HOLMJGREN. TURBINE ENGINE.

APPLICATION FILED MAYZB. 1904.

steam after concentration provide correspondingly-snsped studs, as 12, Fig. i, having the some effects, and, again, the rings A. may be formed With studs, cs 13, Fig. 5, and the buckets a may be grooved in the ends, as 1.4,Fig. 6,With like ef'l'ect, and instead-of grooving the buckets in the end they may be formed With a flat-sided perforation, as 15, Fig. 8, coincide'ntlywith .like perforstions 160i the rings, with e separately-formed correspondingly-sided stud 17 to be inserted, such perforation 15 and stud 17 preferably reaching entirely through the bucket and both rings. in this case the tsp-screws 9 for connecting the rings and buckets may be inserted independentiy of the stud i7 it will be seen that in all these ways of connection oi" the buckets end rings it is s QfllztllGhSldOCl "cess of one part snl e correspondingly formed stud of the other part providing positive and non-slackening means of seeming the. buckets from shifting relatively to the rings by centrifugal action. To obtain sd- Vantage of further iinpelling effect of the and compression the bottom of the buckets, 1 between the buckets at thebcttorn or the by its impact on reduce the snece when after compression on buckets the escape begii'is and thereafter increase said space along the passage 0, Whereby some further reactionary eiiect produced than would be obtained. Without such reduction. v I i What i cl aim as my invention is 1. In a bucket cycle for turbine-engines, interconnection consisting oi e psreileL-sided rccess of one port and s coirespondingly-formod stud of the other pert fitting the recess or securing the buckets iron; shitting relatively to the rings by centrifugal action, seid rings 5111f buckets also bolted together.

I 2. 111. s bucket cycle for turbine-engines, the combination of s pair of rings and inter mediate buckets, said buckets connected. the ends with the rings respectively, the connection consisting of s parallel-sided recess of one part and a correspondingly-iorinerl integral stud of the other pert for securing the buckets from shifting relatively to the rings by centrifugal action, said rings and buckets also bolted. together.

3. in. a. bucket cycle for turbine-en the combination of a pair of ring. and intermediate bncke said. buckets connected i the ends with the rings respectively, the connection COiiSlStilig of s parallel-sic J groove in the rings, and per: studs oi the buckets i tting there. the buckets from shii't :elsti' ri by" centrifugal sction, send bu rings slso bolted. together.-

ln s bucket cycle tor turbine-engine the combination oi? pair of rings, inter mediate buckets, said buckets connect l the ends with the rin respecii 1 connection consisting of s urelleksidcd groove in the rings and. payr ll studs of the buckets iit c the rings Kerk t ii itnesses 

